Hitachi MK-96RD626-07 Overview of Remote Command Devices

7-2 Remote Command Devices

Hitachi Universal Storage Platform V/VM Universal Volume Manager User’s Guide

Overview of Remote Command Devices

A remote command device is a device in the local storage system to which a

command device in the external storage system is mapped.

As you send the CCI commands to the remote command device, you can enter

these CCI commands to the command device of the external storage system

to operate the CCI in the external storage system.

Figure 7-1 shows an example. The OPEN host that is connected to the local

storage system sends the CCI commands of ShadowImage or TrueCopy to the

remote command device, and this means that the commands are entered to

the command device in the external storage system to operate the

ShadowImage pair or the TrueCopy pair in the external storage system.

For detailed information about CCI and the command device, see the

Command Control Interface User and Reference Guide.

Open-system Host

CCI

Remote Command

Device

Connected by

Open Fibre

Mapped as

Remote Command Device

TrueCopy Pair

ShadowImage Pair

: Remote command device

: Command device

: Logical device

: CCI commands

Local Storage System External Storage System

Connected by

Open Fibre

Legend

: Lines showing the concept of mapping.

Connected by

Open Fibre

Figure 7-1 Outline of Remote Command Device

Contents

Main Hitachi Universal Storage Platform V Hitachi Universal Storage Platform VM Hitachi Universal Volume Manager Users Guide F L Page Contents Overview of Universal Volume Manager.................................................. 1-1 About Universal Volume Operations Manager.......................................... 2-1 Preparing for Universal Volume Manager Operations ............................... 3-1 Using the Universal Volume Manager GUI............................................... 4-1 Performing Universal Volume Manager Operations .................................. 5-1 Remote Command Devices.................................................................... 7-1 Connecting External Storage Systems .................................................... A-1 Required Volume Capacity for Each Emulation Type ................................ B-1 Page Preface Intended Audience Product Version Document Revision Level Source Documents for this Revision MP-96RD626-06 MK-96RD626-07d-RSD-V02 Changes in this Revision Referenced Documents Document Conventions Convention for Storage Capacity Values Getting Help Comments Page Page Universal Volume Manager Unifying Copy Operations between Different Storage Systems Figure 1-1 Unifying Copy Operations between Different Storage Systems Unifying Connections from a Host to Different Storage Systems Figure 1-2 Unifying Connections from a Host to Different Storage Systems About Universal Volume Operations Manager Connecting External Storage System Mapping Figure 2-1 Concept of Universal Volume Manager Universal Volume Manager Components Figure 2-2 Universal Volume Manager Components Storage Systems and Cross-subsystem Paths Volumes and Mapping Paths Page Universal Volume Manager Operations Configuring Universal Volume Manager Choosing External Port Choosing and Mapping External Volumes Registering a Volume to an External Volume Group (ExG) Configuring External Volume Attributes Cross-subsystem Paths Path Mode Examples of Alternate Paths Figure 2-3 Example of Alternate Path Setting Figure 2-4 Example of Available Alternate Path Setting Figure 2-5 Example of Unavailable Alternate Path Setting Examples of Switching I/O Execution Paths to Alternate Paths Figure 2-6 When the Path Mode is Multi Mode Figure 2-7 When the Path Mode is Single Mode Figure 2-8 Single Mode with Alternate Paths in Normal and Standby Figure 2-9 Single Mode with Alternate Paths in Standby only Connecting Mainframe Volumes Connecting Open Systems Volumes Choosing Mapping Policy Difference between Automatic Mapping and Manual Mapping Port Discovery and Volume Discovery Page Using a Mapped External Volume from a Connected Host Storing New Data in the Mapped External Volume Figure 2-10 Storing the New Data in the Mapped External Volume Using Existing Data in the Mapped External Volume Figure 2-11 Using the Existing Data in the Mapped External Volume Interoperability with other Products and Functions LUN Manager and Configuration File Loader LUN Expansion Cache Residency Manager Performance Manager TrueCopy and TrueCopy for IBM z/OS Dynamic Provisioning SNMP Agent Examples of Using External Volumes with Other Products Volume Migration Operations Figure 2-12 Example of the Volume Migration Operation TrueCopy Operations Figure 2-13 Example of the TrueCopy Operation Universal Replicator Operations Figure 2-14 Example of the Universal Replicator Operation ShadowImage Operations Figure 2-15 Example of the ShadowImage Operation Copy-on-Write Snapshot Operations Figure 2-16 Example of the Copy-on-Write Snapshot Operation Preparing for Universal Volume Manager Operations System Requirements Storage Systems Supported as External Storage Systems Table 3-1 Storage Systems Available as External Storage Systems Page Page Universal Volume Manager Requirements The following table describes the Universal Volume Manager requirements. Table 3-2 Universal Volume Manager Requirements Guidelines for Universal Volume Manager Operations Mapping Guidelines Recommended Applications according to the HDD Type Table 3-3 When the Emulation Type of the External Volume is for OPEN Table 3-4 When the Emulation Type of the External Volume is for Mainframe Capacity Guidelines Figure 3-1 Example of External Volume of 4 TB or Less Guidelines for Mainframe Volumes Volume Attribute Guidelines The Cache Mode becomes the same for all the LDEVs in one external Creating LUSE Volume Guidelines VMA of Data Retention Utility Maintenance Guidelines for an External Storage System RAID Level Considerations Thunder 9500V Series Guidelines Installing and Uninstalling Universal Volume Manager Installing Universal Volume Manager Uninstalling Universal Volume Manager Starting Universal Volume Manager Using the Universal Volume Manager GUI Volume Operation Window Figure 4-1 Volume Operation Window Table 4-1 Volume Operation Tree Volume Operation Tree Table 4-2 Pop-up Menu for the Volume Operation Tree Volume Operation List (When Subsystem or Product Name is Clicked) Figure 4-2 Volume Operation List when Subsystem or a Product Name is Clicked The Volume Operation list consists of: The following items are displayed: Volume Operation List (When Path Group is Clicked) Figure 4-3 Volume Operation List when Path Group is Clicked Table 4-4 Pop-up Menu: External Volumes, Volume Operation Window Table 4-5 Pop-up Menu: Cross-Subsystem Paths, Volume Operation Window Preview Dialog Box Figure 4-4 Preview Dialog Box Delete: Cancels the settings selected in the Preview dialog box. Path Operation Window Figure 4-5 Path Operation Window Table 4-6 Path Operation Tree Path Operation Tree Path Operation List (When Subsystem is Clicked) Figure 4-6 Path Operation List when Subsystem is Clicked Port Table 4-7 Status of the Cross-subsystem Path Displayed in the Status Table 4-8 Pop-up Menu in the Path Operation List (when Subsystem is clicked) Path Operation List (When Product Name is Clicked) Figure 4-7 Path Operation List when Product Name is Clicked WWN Path Operation List (When Port or WWN is Clicked) Port Operation Window Figure 4-9 Port Operation Window Port Operation Tree Port Operation List Attribute: Page Performing Universal Volume Manager Operations Overview of Setting Operations Figure 5-1 Operations of Making External Volumes Usable from a Host Setting Port of External Storage System Setting Port Attribute for Local Storage System Mapping an External Volume Automatically Mapping an External Volume Manually Add Volume Dialog Box Figure 5-2 Add Volume Dialog Box Page Set External Volume Parameter Dialog Box Figure 5-3 Set External Volume Parameter Dialog Box LDEV Mapping (Auto) Dialog Box Figure 5-4 LDEV Mapping (Auto) Dialog Box LDKC drop-down list CU drop-down list Figure 5-5 LDEV Mapping (Manual) Dialog Box LDEV Mapping (Manual) Dialog Box ExG LDKC:CU:LDEV SSID Dialog Box Figure 5-6 SSID Dialog Box List SSID Example: How to Map LDEVs Automatically Example: How to Map LDEVs Manually Figure 5-8 Example of LDEV Mapping (Manual) Dialog Box Setting the Cross-subsystem Paths Configure Cross-subsystem Paths Dialog Box Figure 5-9 Configure Cross-subsystem Paths Dialog Box Figure 5-10 Port Discovery Dialog Box Configuring Cross-subsystem Path Figure 5-11 Pop-up Menu of Configure Cross-subsystem Paths Dialog Box Changing the Configured Cross-subsystem Path Priority Canceling the Cross-subsystem Path Configuration Changing the Cross-subsystem Path Replacing All the Cross-subsystem Paths with Newly-added Cross- subsystem Paths Checking the External Volume Details LDEV Information Dialog Box Figure 5-13 LDEV Information Dialog Box Mapping Path Information Dialog Box Page Turning On or Off the Storage System Commands for Turning On or Off Only the External Storage System Turning On or Off Only the External Storage System Turning On or Off Only the Local Storage System Turning On or Off Both Storage Systems Disconnecting External Storage System or Disconnecting External Volume The following table describes operations that are required before disconnecting external volumes. Table 5-4 Operations Required before Disconnecting External Volumes Disconnecting All External Volumes (Disconnect Subsystem) Disconnecting an Individual External Volume (Disconnect Volume) Checking Connection Status and Resuming External Volume Operation The Check Paths & Restore Volume command is required to be Resuming All External Volumes (Check Paths & Restore Volume) Resuming an Individual External Volume (Check Paths & Restore Volume) Stopping the Use of Paths to the External Volume (Disconnect Paths) Restoring the Paths to the External Volume (Check Paths) Changing the Cache Mode Setting of the External Volume Changing the Inflow Control Setting of the External Volume Changing the Port Setting of the External Storage System Change WWN Parameter Dialog Box Figure 5-15 Change WWN Parameter Dialog Box Editing Mapping Policy Edit Policy Dialog Box Figure 5-16 Edit Policy Dialog Box Deleting the External Volume Mapping Page Using Spreadsheets for Universal Volume Manager Operations Figure 6-1 Work Flow for Using Spreadsheets Before Using Spreadsheets Table 6-1 Contents of a Spreadsheet Available Types and Operation Tags Table 6-2 Relationship Among the Types, Operation Tags, and Version Number Saving Storage System Information SSID Tag Table 6-3 Information Saved when the SSID tag is Written ExternalGroup Tag Table 6-4 Information Saved when the ExternalGroup Tag is Written MappedVolume Tag Table 6-5 Information Saved when the MappedVolume Tag is Written Mapping External Volumes (AddVolumeSetting Tag) Table 6-6 Structure and Identifier of AddVolumeSetting Tag Parameters The following table shows the parameters that can be set for the AddVolumeSetting tag. Table 6-7 AddVolumeSetting Tag Parameters Page Page Example of a Spreadsheet Remote Command Devices Overview of Remote Command Devices Figure 7-1 Outline of Remote Command Device Guidelines for Remote Command Devices Table 7-1 Displayed Information in Device Column for Remote Command Device Page Mapping a Command Device as a Remote Command Device Using TrueCopy or Universal Replicator with Remote Command Device Figure 7-2 Difference between Standard Mode and Initiator/External MIX Mode Figure 7-3 Example of Using TrueCopy or Universal Replicator with Remote Command Device Procedure to Use Initiator/External MIX Mode Restrictions on Initiator/External MIX Mode Page Troubleshooting 8-2 Troubleshooting Hitachi Universal Storage Platform V/VM Universal Volume Manager Users Guide Troubleshooting Table 8-1 General Troubleshooting for Universal Volume Manager Troubleshooting 8-3 Hitachi Universal Storage Platform V/VM Universal Volume Manager Users Guide 8-4 Troubleshooting Hitachi Universal Storage Platform V/VM Universal Volume Manager Users Guide Troubleshooting 8-5 Hitachi Universal Storage Platform V/VM Universal Volume Manager Users Guide Calling the Hitachi Data Systems Support Center A Connecting External Storage Systems Table A-1 System Parameter Settings (AMS/WMS) Relationship between Serial Number and AMS/WMS Model Table A-2 Relationship between Serial Number and AMS/WMS Model Relationship between WWN of Port and Controller (AMS/WMS) Table A-3 Relationship between WWN of Port and Controller (AMS/WMS) Path Status and Examples of Recovery Procedure (AMS/WMS) Table A-4 Path Status and Examples of Recovery Procedure (AMS/WMS) Thunder 9500V Storage System System Parameters for Connecting Thunder 9500V Table A-5 System Parameter Settings (9500V) Relationship between Serial Number and 9500V Model Table A-6 Relationship between Serial Number and 9500V Model Relationship between WWN of Port and Controller(9500V) The following table describes the relationship between WWN of port and controller. Table A-7 Relationship between WWN of Port and Controller (9500V) Path Status and Examples of Recovery Procedure (9500V) Table A-8 Path Status and Examples of Recovery Procedure (9500V) USP V/VM Storage System Path Status and Examples of Recovery Procedure (USP V/VM) Table A-9 Path Status and Examples of Recovery Procedure (USP V/VM) TagmaStore USP/NSC Storage System Setting the Host Mode Option When a Volume of More Than 2 TB Is Used (USP/NSC) Path Status and Examples of Recovery Procedure (USP/NSC) Table A-10 Path Status and Examples of Recovery Procedure (USP/NSC) Lightning 9900V Storage System Path Status and Examples of Recovery Procedure (9900V) Table A-11 Path Status and Examples of Recovery Procedure (9900V) Lightning 9900 Storage System Path Status and Examples of Recovery Procedure (9900) SVS200 Storage System Path Status and Examples of Recovery Procedure (SVS200) Table A-13 Path Status and Examples of Recovery Procedure (SVS200) EVA Storage System System Parameter Settings for Connecting EVA Storage System Table A-14 System Parameter Settings for Connecting EVA Storage System Identifying Logical Volume of EVA Storage System (Using Characteristic 2) Switch EVA Note on Behavior of Alternate Path when EVA Storage System is Connected System Parameter Settings for Connecting Sun StorEdge 6120/6320 Table A-15 System Parameter Settings for Connecting Sun StorEdge 6120/6320 Page System Parameter Settings for Connecting EMC CLARiiON CX600 Table A-18 System Parameter Settings for Connecting EMC CLARiiON CX600 System Parameter Settings for Connecting IBM DS4000 Series Table A-19 System Parameter Settings for Connecting IBM DS4000 Series Non-Hitachi Storage Systems Page B Required Volume Capacity for Each Emulation Type How to Figure Out Required External Volume Capacity Table B-1 Maximum Usable Capacity of External Volume Figure B-1 Idea of LDEV Capacity Figure B-2 Example of How to Figure Out the Volume Capacity (In the Case of OPEN-3) Capacity List for Each Emulation Type Table B-2 LDEV Capacity Information for Each Emulation Type Table B-3 Volume Capacity Information on Each Emulation Type Page Page Page C Adjusting Volume Capacities for Pairs Figure C-1 Copying Data from External Storage System (Using an External Volume as P-VOL) Figure C-2 Copying Data to External Storage System (Setting an External Volume as S-VOL) Page Acronyms and Abbreviations Page Index Page Page Page MK-96RD626-07